This is pretty brilliant. I just got one today. I've been using the SansAmp Programmable DI for many years in front of a SS Ampeg SVT amp. I like the sound of that a lot for EQ and adding a bit of gain, but the DP-3X excels at adding the kind of dirt you'd expect if you wanted to run a distorted guitar amp and a clean bass amp in parallel. Doug Pinnick's own sound is a thick wall of distortion, compression with very clearly defined lows, and this nails it.